From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S270847AbTGVO3S (ORCPT ); Tue, 22 Jul 2003 10:29:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S270850AbTGVO3S (ORCPT ); Tue, 22 Jul 2003 10:29:18 -0400 Received: from ip252-142.choiceonecom.com ([216.47.252.142]:23301 "EHLO explorer.reliacomp.net") by vger.kernel.org with ESMTP id S270847AbTGVO3M (ORCPT ); Tue, 22 Jul 2003 10:29:12 -0400 Message-ID: <3F1D4DBA.4010700@cendatsys.com> Date: Tue, 22 Jul 2003 09:44:10 -0500 From: Edward King User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.4) Gecko/20030529 X-Accept-Language: en-us, en MIME-Version: 1.0 To: "John V. Martinez" CC: linux-kernel@vger.kernel.org Subject: Re: 2.4.21-pre4: PDC ide driver problems with shared interrupts References: <3F1C54A8.5020404@snarkhunter.com> In-Reply-To: <3F1C54A8.5020404@snarkhunter.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org John: Quick fix to the problem is remove devfs -- it appears that the devfs code doesn't like to have the raid layered on top of it, and it loses interrupts. I've got two systems now running 4 200GB WD's connected to a single promise card (ATA100/TX2) with the booting drive (a 5th drive) attached to the motherboard. The raid works flawlessly and is fast -- I imagine there'd be a speedup by keeping all the drives as master (with 2 pdc's) and it would be more robust, but those aren't issues. Hope this helps -- I'll post this to the mailing list to help anyone else with this problem. - Ed John V. Martinez wrote: > Hi Ed, > > I found a linux-kernel post you made back in March about problems > running two Promise IDE controllers in the same system. I have a > similar configuration, (and a similar problem,) and I was wondering if > you ever found a solution, or if one of the more recent 2.4.21-foo > kernels solved it for you. > > (I have two Promise ATA-100/TX2 (20268 chip) controllers, and I have > one 200GB WD drive as a single master on each channel. The two > controllers are sharing interrupts with othwer cards, but not with > each other. I can access each disk individually, but when I tried to > make them work hard: mkraid a RAID5 array using these four drives, the > system freezes HARD until I hit the big red button. [Then it reboots, > spots the raid superblock, tries to rebuild my RAID5 array, and > freezes again, until I get a clue and unplug the drives in question > while powered down :^)) > > Anyway, if you have any more insight into this problem than you did in > March, and care to share, I'd be much obliged. > > Cheers, > > -(-- John